US2820007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating compositions
Assignee: Shell Development Co
•
Filing: 1954-11-15
•
Granted: 1958-01-14
•
Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
- 👤 Minne Johan Leonard Van Der
- 👤 Hermanie Pieter Hendrik Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:05
CPC Classifications
C; C10; C10M; C10M173/00; C10M2201/00; C10M2201/02; C10M2201/06; C10M2201/062; C10M2201/063; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/135; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A STABLE WATER-IN-MINERAL OIL EMULSION COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST 25% WATER AND THE BALANCE BEING MINERAL OIL CONTAINING TOTALLY FROM 0.05% TO 0.5% BY WEIGHT OF CALCIUM CALCULATED ON THE OIL PHASE OF AN ADDITIVE COMBINATION OF AN OIL-SOLUBLE BASIC CALCIUM PETROLEUM SULFONATE AND AN OIL-SOLUBLE BASIC CALCIUM C12-18 ALKYLSALICYLATE, THE WATER PHASE OF THE EMULSION BEING FREE OF WATER-SOLUBLE INORGANIC METAL SALTS.
Claim 2
Dependent Claim
65 words
A STABLE WATER-IN-MINERAL OIL EMULSION COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST 25% WATER AND THE BALANCE BEING MINERAL OIL CONTAINING TOTALLY FROM 0.05% TO 0.5% BY WEIGHT OF CALCIUM CALCULATED ON THE OIL PHASE OF AN ADDITIVE COMBINATION OF AN OIL-SOLUBLE BASIC CALCIUM PETROLEUM SULFONATE AND AN OIL-SOLUBLE BASIC CALCIUM C12-18 ALKYLSALICYLATE, THE WATER PHASE OF THE EMULSION BEING FREE OF WATER-SOLUBLE INORGANIC METAL SALTS.
References Cited (Backward Citations)
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US2425174A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |